CN109430987A - A kind of assembly type helmet used at construction site - Google Patents
A kind of assembly type helmet used at construction site Download PDFInfo
- Publication number
- CN109430987A CN109430987A CN201811637510.4A CN201811637510A CN109430987A CN 109430987 A CN109430987 A CN 109430987A CN 201811637510 A CN201811637510 A CN 201811637510A CN 109430987 A CN109430987 A CN 109430987A
- Authority
- CN
- China
- Prior art keywords
- brim
- hat
- slot
- block
- cap body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010276 construction Methods 0.000 title claims abstract description 20
- 210000004243 sweat Anatomy 0.000 claims abstract description 11
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 101100450138 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) hat-2 gene Proteins 0.000 description 11
- 239000007787 solid Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 208000027418 Wounds and injury Diseases 0.000 description 4
- 230000006378 damage Effects 0.000 description 4
- 208000014674 injury Diseases 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001459 mortal effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/32—Collapsible helmets; Helmets made of separable parts ; Helmets with movable parts, e.g. adjustable
Abstract
A kind of assembly type helmet used at construction site, it is related to technical field of buildings, including cap body and the brim of a hat, the two is to be detachably connected, the brim of a hat offers loose slot close to the side of cap body, the internal activity of loose slot is connected with fixture block, the top two sides of fixture block are fixedly connected to telescopic rod, the surface of telescopic rod has been fitted and connected extension spring, the top middle portion of fixture block is fixedly connected with one end of pull rod, the other end of pull rod is fixedly connected with pull ring, cap body is fixedly connected with fixed block close to the side lower end of the brim of a hat, cap body is fixedly installed with basis along plate at the lower surface edge of the brim of a hat, absorbing sweat sponge is set thereon.The present invention can be fixed fixed block by fixture block and being equipped with for fixing groove, to which the brim of a hat and cap body are detachably fixed, it is able to drive fixture block movement by connecing pull rod and being equipped with for pull ring, fixture block can be made to spring into fixing groove automatically by extension spring, be installed convenient for the brim of a hat；Preposition gear edge is flexible and changeable to be detachably connected, practical.
Description
Technical field
The present invention relates to technical field of buildings, specially a kind of assembly type helmet used at construction site.
Background technique
Safety cap is the steel worn or the shallow dome cap similar to raw material for protecting the crown, prevents alluvium from injuring
The protective articles on head, nowadays, construction safety helmet can be avoided miniature article that high-altitude is fallen caused by the head of people
Mortal injury, but for some need that noise wound caused by human body can not be avoided for the building site constructed with electric tool
Evil, and in the case where worker works for a long time, head can constantly flow out sweat, produce bigger effect to work.
Currently, existing safety cap cannot be guaranteed that worker normally works, building site noise can not be solved caused by human body
Injury, it is inconvenient for use, it is unfavorable for promoting the use of.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of assembly type helmet used at construction site, it is therefore intended that solution
Certainly existing safety cap cannot be guaranteed that worker normally works, and can not solve the injury caused by human body of building site noise, inconvenient for use,
It is unfavorable for the problem of promoting the use of.
In order to achieve the above object, the present invention is achieved by the following technical programs:
A kind of assembly type helmet used at construction site, including cap body and the brim of a hat, it is characterised in that: what the cap body was connect with the brim of a hat
Position is equipped with the fixed block of protrusion, opens up on the corresponding position of the brim of a hat fluted, and the fixed block is embedded in the groove
And be adapted with groove, form plug connection；On the linkage section of plug connection, loose slot is offered in the brim of a hat, it is described
Elastic holding block is equipped in loose slot, the upper surface corresponding position of the fixed block is equipped with fixing groove, the elasticity holding block
It is adapted in bottom insertion fixing groove and with fixing groove, is formed and fix connection.
As the preferred technical solution of the present invention, the loose slot inside the brim of a hat is T-shaped, including sipes and narrow slot, institute
Sipes to be stated to be arranged far from the brim of a hat outer surface, connection corresponding with the groove on fixed block, the narrow slot is arranged close to the brim of a hat outer surface,
One end is connected to sipes, and the other end penetrates through the brim of a hat；
It is further preferred that the elasticity holding block includes sequentially connected fixture block, elastic parts, pull rod and drawing from bottom to top
Ring；The fixture block is set in sipes, and the pull rod is set in narrow slot, and the pull ring is set to the outside of the brim of a hat, is fixed in narrow slot
Notch position；The elastic parts is set to around pull rod, is folded between fixture block and the slot bottom of sipes.
It is further preferred that the elastic parts includes telescopic rod and extension spring, one end of the telescopic rod is fixed on
On fixture block, the other end is fixed on the slot bottom position of sipes, the corresponding outside for being set in telescopic rod of the extension spring.
It is further preferred that being equipped with limit plate between the pull ring and pull rod, the limit plate fixes the notch in narrow slot
Position.
It is further preferred that further including preposition gear edge, the preposition gear is along the lower surface edge set on cap body close to the brim of a hat
Place is set to holding block of the basis on plate along plate and protrusion including basis；The bottom of the cap body corresponding position opens up fixing
Slot, the holding block fix in fixing slot；The basis is fixedly connected with absorbing sweat sponge far from the side of the brim of a hat along plate.
It is further preferred that the two sides of the holding block offer buckling groove；The corresponding cap body in the buckling groove two sides
Fixing slot is inside respectively symmetrically set, the fixing slot is equipped with binding block close to the transverse part of buckling groove, insertion button on the inside of the binding block
It closes and is fastened in slot, outside is fixedly connected sequentially assister bar, push rod, connecting rod and compressed spring；The tail of the compressed spring
End is against the slot bottom of fixing slot and connection fixed thereto.
It is further preferred that the fixing slot is horizontal T-slot, correspondingly, each binding block corresponds to assister bar, two
Root push rod, two connecting rods and two compressed springs, two compressed springs are separately fixed at up and down two that horizontal T-slot founds portion
End.
It is further preferred that the assister bar, push rod, connecting rod are connected by pin shaft head and the tail respectively.
It is further preferred that further including fixed column and earplug；The fixed column is a pair of altogether, is fixedly mounted under the cap body
At left and right sides of surface；Two fixed columns it is mutually close be fixedly connected to noiseproof earplug on one side.
In addition, further including bandage；The bandage totally two, one end is fixedly connected on one of the fixed column far from cap body
On side, the other end is fixedly connected with buckle.
Compared with prior art, the present invention have it is following the utility model has the advantages that
1) the brim of a hat is to be detachably connected with cap body: by being equipped with for fixture block and fixing groove, fixed block can be fixed, thus
The brim of a hat and cap body are fixed, are able to drive fixture block movement by connecing pull rod and being equipped with for pull ring, it can by extension spring
Fixture block is set to spring into fixing groove automatically, convenient for the installation to the brim of a hat；
2) preposition gear is along with cap body being to be detachably connected: by being equipped with for binding block and buckling groove, solid block can be fixed,
Push rod can be pushed by assister bar, connecting rod can be pushed by push rod, pushing block can be pushed by connecting rod, pass through pushing block
Compressed spring can be pushed.
Detailed description of the invention
By made detailed description in conjunction with the following drawings, above-mentioned and/or other aspects of the invention and advantage will become
It becomes apparent from and is easier to understand, these attached drawings are only schematical, are not intended to limit the present invention, in which:
Fig. 1 is a kind of overall structure diagram of assembly type helmet used at construction site of the present invention；
Fig. 2 is a kind of inside connection schematic diagram of assembly type helmet used at construction site of the present invention；
Fig. 3 is structure enlargement diagram at A in Fig. 2 of the present invention；
Fig. 4 is structure enlargement diagram at B in Fig. 2 of the present invention.
Appended drawing reference: 1- cap body；The 2- the brim of a hat；3- fixture block；4- telescopic rod；5- extension spring；6- pull rod；7- pull ring；8- is solid
Determine block；9- fixed column；10- consolidates block；11- buckling groove；12- binding block；13- assister bar；14, push rod；15- connecting rod；16- is pushed away
Block；17- compressed spring；18- noiseproof earplug；19- bandage；20, it buckles；21- absorbing sweat sponge；The basis 22- is along plate.
Specific embodiment
Hereinafter, the horizontal plate of the big chutable concrete super high-rise pumping pressure of monitoring of the invention is described with reference to the accompanying drawings
The embodiment of tube body system and monitoring method.
The embodiment recorded herein is specific specific embodiment of the invention, for illustrating design of the invention,
Be it is explanatory and illustrative, should not be construed as the limitation to embodiment of the present invention and the scope of the invention.Except what is recorded herein
Outside embodiment, those skilled in the art can also based on the claim of this application book and specification disclosure of that using aobvious and
The other technical solutions being clear to, these technical solutions include using any obvious to making for the embodiment recorded herein
The technical solution of substitutions and modifications.
The attached drawing of this specification is schematic diagram, aids in illustrating design of the invention, it is schematically indicated the shape of each section
And its correlation.It note that for the ease of clearly showing the structure of each component of the embodiment of the present invention, between each attached drawing
Do not drawn according to identical ratio.Identical reference marker is for indicating identical part.Fig. 1-4 is please referred to, the present invention mentions
For a kind of technical solution:
A kind of assembly type helmet used at construction site, including cap body, the side of cap body 1 are fixedly installed with the brim of a hat 2, and the brim of a hat 2 is close
The side of cap body 1 offers loose slot, and the internal activity of loose slot is connected with fixture block 3, and the top two sides of fixture block 3 are fixedly connected with
There is telescopic rod 4, the surface of telescopic rod 4 has been fitted and connected extension spring 5, fixture block 3 can be made to spring into automatically by extension spring 5 solid
Determine slot, convenient for the installation to the brim of a hat 2, the top middle portion of fixture block 3 is fixedly connected with one end of pull rod 6, and the other end of pull rod 6 is fixed to be connected
It is connected to pull ring 7, pull rod 6 is fixedly connected by limit plate with pull ring 7.Cap body 1 is fixedly connected with close to the side lower end of the brim of a hat 2
Determine block 8, the top of fixed block 8 offers fixing groove, can be fixed by fixed block 8 by fixture block 3 and being equipped with for fixing groove,
To which the brim of a hat 2 and cap body 1 is fixed, the movement of fixture block 3 is able to drive by connecing pull rod 6 and being equipped with for pull ring 7；Fixture block 3
Bottom insertion fixing groove is simultaneously adapted with fixing groove, can be effectively fixed by fixed block 8 by the way that fixture block 3 is inserted into fixing groove.
Cap body 1 is fixedly installed with basis along plate 22 at the lower surface edge of the brim of a hat 2, and basis is fixed along the top of plate 22
It is connected with solid block 10, Gu the two sides of block 10 offer buckling groove 11, the inside of buckling groove 11 has been fitted and connected binding block 12, leads to
Solid block 10 can be fixed by crossing binding block 12 and being equipped with for buckling groove 11, and a middle side part of binding block 12 is fixedly connected with power-assisted
One end of bar 13, the other end of assister bar 13 are fixedly connected with one end of push rod 14, and the other end of push rod 14 is flexibly connected connecting rod
15 one end can push push rod 14 by assister bar 13, can push connecting rod 15 by push rod 14, connecting rod 15 it is another
End is connected with pushing block 16, and pushing block 16 is fixedly connected with compressed spring 17 far from one end of connecting rod 15, passes through connecting rod 15
Pushing block 16 can be pushed, compressed spring 17 can be pushed by pushing block 16.Basis is fixedly connected along plate 22 far from the side of the brim of a hat 2
There is absorbing sweat sponge 21, worker can be helped to fall sweat absorption by absorbing sweat sponge 21, greatly improve the practical of safety cap
Property.
Such as Fig. 4, the two sides of holding block 10 offer buckling groove 11；11 two sides of buckling groove are 1 interior point of cap body corresponding
Do not set fixing slot symmetrically, the fixing slot is equipped with binding block 12 close to the transverse part of buckling groove 11, is embedded on the inside of the binding block 12
It is fastened in buckling groove 11, outside is fixedly connected sequentially assister bar 13, push rod 14, connecting rod 15 and compressed spring 17；It is described
The tail end of compressed spring 17 is against the slot bottom of fixing slot and connection fixed thereto.Compressed spring 17 one end and cunning far from pushing block 16
The inner wall of dynamic slot is fixedly connected；The surface of compressed spring 17 and the inner wall of sliding groove are fitted and connected, can by compressed spring 17
Basis is easily installed along plate 22 and absorbing sweat sponge 21.
Fixing slot is set as horizontal T-slot, correspondingly, the correspondence of each binding block 12 13, two push rods 14 of a piece assister bar,
Two connecting rods 15 and two compressed springs 17, two compressed springs 17 are separately fixed at the upper and lower ends that horizontal T-slot founds portion；
The assister bar 13, push rod 14, connecting rod 15 are connected by pin shaft head and the tail respectively.Two push rods 14 are close to one end of assister bar 13
It is flexibly connected by pin shaft with assister bar 13, under the action of pin shaft, two can be pushed to push away while pushing assister bar 13
Bar 14.
In addition, the lower surface two sides of cap body 1 are fixedly installed with fixed column 9；There are two the settings of fixed column 9 and two fixations
Column it is mutually close be fixedly connected to noiseproof earplug 18 on one side, effectively worker can be avoided to be done by noise by noiseproof earplug 18
It disturbs, influences worker's normal work；One end of bandage 19 can also be fixedly connected with far from one end of cap body 1 in fixed column 9；Bandage 19
The other end be fixedly connected with buckle 20, worker's safety convenient to use can be made by bandage 19 and being equipped with for buckle 20
Cap.
In actual use, when the brim of a hat 2 is damaged to be replaced, firstly, solid by pulling pull ring 7 that can pull
Determine block 8, fixture block 3 can be pulled by fixed block 8, thus make fixture block 8 be detached from fixing groove, the brim of a hat 2 can thus be removed into
Row replacement, can save the production cost to safety cap in this way, safety cap local damage is avoided to be equal to the case where scrapping, and install
When, similarly, by pulling pull ring 7 to drive fixture block 3, it is completely in fixture block 3 in loose slot, then pastes the brim of a hat 2 and cap body 1
It closes, removes the pulling force to pull ring 7, so that fixture block 3 is reentered fixing groove under the action of extension spring 5, so that the brim of a hat 2 be consolidated
It is fixed, it when installing and fixing absorbing sweat sponge 21, is bonded along plate 22 with the bottom of cap body 1 by basis, in this way, consolidating block 10 will be by
Gradually squeezing binding block 12 can make to detain when binding block 12 is opposite with the notch of buckling groove 11 under the action of compressed spring 17
It closes block 12 and springs into buckling groove 11 automatically, so that basis is fixed along plate 22 and absorbing sweat sponge 21.
It should be noted that in the present invention unless specifically defined or limited otherwise, fisrt feature is in second feature
It can be that the first and second features directly contact or the first and second features are by intermediary mediate contact "up" or "down".
Moreover, fisrt feature can be above the second feature " above ", " above " and " above " fisrt feature right above second feature or tiltedly
Top, or first feature horizontal height is merely representative of higher than second feature.Fisrt feature second feature " under ", " lower section " and
" following " can be fisrt feature and be directly under or diagonally below the second feature, or be merely representative of first feature horizontal height less than
Two features.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of assembly type helmet used at construction site, including cap body (1) and the brim of a hat (2), it is characterised in that:
The position that the cap body (1) connect with the brim of a hat (2) is equipped with the fixed block (8) of protrusion, on the corresponding position of the brim of a hat (2)
Open up fluted, the fixed block (8) is embedded in the groove and is adapted with groove, forms plug connection；
On the linkage section of plug connection, loose slot is offered in the brim of a hat (2), elasticity is equipped in the loose slot and fixes
Block, the upper surface corresponding position of the fixed block (8) are equipped with fixing groove, and the bottom of the elasticity holding block is inserted into fixing groove simultaneously
It is adapted with fixing groove, is formed and fix connection.
2. a kind of assembly type helmet used at construction site according to claim 1, it is characterised in that: in the brim of a hat (2)
The loose slot in portion is T-shaped, including sipes and narrow slot, and the sipes is arranged far from the brim of a hat (2) outer surface, on fixed block (8)
The corresponding connection of groove, the narrow slot are arranged close to the brim of a hat (2) outer surface, and one end is connected to sipes, and the other end penetrates through the brim of a hat (2)；
The elasticity holding block includes sequentially connected fixture block (3), elastic parts, pull rod (6) and pull ring (7) from bottom to top；Institute
Fixture block (3) are stated in sipes, the pull rod (6) is set in narrow slot, and the pull ring (7) is set to the outside of the brim of a hat (2), fixes
The notch position of narrow slot；The elastic parts is set to around pull rod (6), is folded between fixture block (3) and the slot bottom of sipes.
3. a kind of assembly type helmet used at construction site according to claim 2, it is characterised in that: the elastic parts packet
Telescopic rod (4) and extension spring (5) are included, one end of the telescopic rod (4) is fixed on fixture block (3), and the other end is fixed on sipes
Slot bottom position, the corresponding outside for being set in telescopic rod (4) of the extension spring (5).
4. a kind of assembly type helmet used at construction site according to claim 2, it is characterised in that: the pull ring (7) with
Limit plate is equipped between pull rod (6), the limit plate fixes the notch position in narrow slot.
5. a kind of assembly type helmet used at construction site according to any one of claims 1-4, it is characterised in that: also wrap
Preposition gear edge is included, the preposition gear is along the lower surface edge for being set to cap body (1) close the brim of a hat (2), including basis is along plate (22)
Holding block (10) of the basis on plate (22) is set to protrusion；The bottom of cap body (1) corresponding position opens up fixing slot, institute
Holding block (10) are stated to fix in fixing slot；The basis is fixedly connected with absorbing sweat sea far from the side of the brim of a hat (2) along plate (22)
Continuous (21).
6. a kind of assembly type helmet used at construction site according to claim 5, it is characterised in that: the holding block (10)
Two sides offer buckling groove (11)；Fixing slot is respectively symmetrically set in the corresponding cap body (1) in buckling groove (11) two sides, institute
The transverse part that fixing slot is stated close to buckling groove (11) is equipped with binding block (12), on the inside of the binding block (12) in insertion buckling groove (11)
It is fastened, outside is fixedly connected sequentially assister bar (13), push rod (14), connecting rod (15) and compressed spring (17)；The pressure
The tail end of contracting spring (17) is against the slot bottom of fixing slot and connection fixed thereto.
7. a kind of assembly type helmet used at construction site according to claim 6, it is characterised in that: the fixing slot is cross
Set T-slot, correspondingly, each binding block (12) correspond to an assister bar (13), two push rods (14), two connecting rods (15) and
Two compressed springs (17), two compressed springs (17) are separately fixed at the upper and lower ends that horizontal T-slot founds portion.
8. a kind of assembly type helmet used at construction site according to claim 6, it is characterised in that: the assister bar
(13), push rod (14), connecting rod (15) are connected by pin shaft head and the tail respectively.
9. a kind of assembly type helmet used at construction site according to claim 1, it is characterised in that: further include fixed column
(9) and earplug (18)；The fixed column (9) is a pair of altogether, is fixedly mounted at left and right sides of the cap body (1) lower surface；Two is fixed
Column (9) it is mutually close be fixedly connected to noiseproof earplug (18) on one side.
10. a kind of assembly type helmet used at construction site according to claim 9, it is characterised in that: further include bandage
(19)；The bandage (19) totally two, one end is fixedly connected on the side of the fixed column (9) separate cap body (1), another
End is fixedly connected with buckle (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811637510.4A CN109430987A (en) | 2018-12-29 | 2018-12-29 | A kind of assembly type helmet used at construction site |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811637510.4A CN109430987A (en) | 2018-12-29 | 2018-12-29 | A kind of assembly type helmet used at construction site |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109430987A true CN109430987A (en) | 2019-03-08 |
Family
ID=65539620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811637510.4A Pending CN109430987A (en) | 2018-12-29 | 2018-12-29 | A kind of assembly type helmet used at construction site |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109430987A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200168841Y1 (en) * | 1999-08-02 | 2000-02-15 | 주식회사한중 | Safety cap having multi-function for industry |
| CN205512564U (en) * | 2016-03-30 | 2016-08-31 | 代尔塔（中国）安全防护有限公司 | Safety helmet |
| CN206165929U (en) * | 2016-11-09 | 2017-05-17 | 浙江永联建设工程股份有限公司 | Safety helmet |
| CN206911362U (en) * | 2017-07-11 | 2018-01-23 | 大连第一有机化工有限公司 | A kind of catalyst calcining box |
| CN206909814U (en) * | 2017-06-06 | 2018-01-23 | 广东环境保护工程职业学院 | A kind of Novel safety helmet and protector |
| CN207100663U (en) * | 2017-07-30 | 2018-03-16 | 郝毅 | A kind of helmet used at construction site |
| CN208176117U (en) * | 2018-03-07 | 2018-12-04 | 谢圳钧 | A kind of safety cap that hat lining is replaceable |
| CN209436338U (en) * | 2018-12-29 | 2019-09-27 | 中国建筑第二工程局有限公司 | A kind of assembly type helmet used at construction site |
-
2018
- 2018-12-29 CN CN201811637510.4A patent/CN109430987A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200168841Y1 (en) * | 1999-08-02 | 2000-02-15 | 주식회사한중 | Safety cap having multi-function for industry |
| CN205512564U (en) * | 2016-03-30 | 2016-08-31 | 代尔塔（中国）安全防护有限公司 | Safety helmet |
| CN206165929U (en) * | 2016-11-09 | 2017-05-17 | 浙江永联建设工程股份有限公司 | Safety helmet |
| CN206909814U (en) * | 2017-06-06 | 2018-01-23 | 广东环境保护工程职业学院 | A kind of Novel safety helmet and protector |
| CN206911362U (en) * | 2017-07-11 | 2018-01-23 | 大连第一有机化工有限公司 | A kind of catalyst calcining box |
| CN207100663U (en) * | 2017-07-30 | 2018-03-16 | 郝毅 | A kind of helmet used at construction site |
| CN208176117U (en) * | 2018-03-07 | 2018-12-04 | 谢圳钧 | A kind of safety cap that hat lining is replaceable |
| CN209436338U (en) * | 2018-12-29 | 2019-09-27 | 中国建筑第二工程局有限公司 | A kind of assembly type helmet used at construction site |
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